| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Kim (Woogyom) Milo | 1109 | 76.06% | 2 | 14.29% |
| Dan Murphy | 284 | 19.48% | 1 | 7.14% |
| Linus Walleij | 36 | 2.47% | 3 | 21.43% |
| Axel Lin | 27 | 1.85% | 7 | 50.00% |
| Thomas Gleixner | 2 | 0.14% | 1 | 7.14% |
| Total | 1458 | 14 |
// SPDX-License-Identifier: GPL-2.0-only /* * TI LM363X Regulator Driver * * Copyright 2015 Texas Instruments * * Author: Milo Kim <milo.kim@ti.com> */ #include <linux/err.h> #include <linux/kernel.h> #include <linux/mfd/ti-lmu.h> #include <linux/mfd/ti-lmu-register.h> #include <linux/module.h> #include <linux/of.h> #include <linux/gpio/consumer.h> #include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/of_regulator.h> #include <linux/slab.h> /* LM3631 */ #define LM3631_BOOST_VSEL_MAX 0x25 #define LM3631_LDO_VSEL_MAX 0x28 #define LM3631_CONT_VSEL_MAX 0x03 #define LM3631_VBOOST_MIN 4500000 #define LM3631_VCONT_MIN 1800000 #define LM3631_VLDO_MIN 4000000 #define ENABLE_TIME_USEC 1000 /* LM3632 */ #define LM3632_BOOST_VSEL_MAX 0x26 #define LM3632_LDO_VSEL_MAX 0x28 #define LM3632_VBOOST_MIN 4500000 #define LM3632_VLDO_MIN 4000000 /* LM36274 */ #define LM36274_BOOST_VSEL_MAX 0x3f #define LM36274_LDO_VSEL_MAX 0x32 #define LM36274_VOLTAGE_MIN 4000000 /* Common */ #define LM363X_STEP_50mV 50000 #define LM363X_STEP_500mV 500000 static const int ldo_cont_enable_time[] = { 0, 2000, 5000, 10000, 20000, 50000, 100000, 200000, }; static int lm363x_regulator_enable_time(struct regulator_dev *rdev) { enum lm363x_regulator_id id = rdev_get_id(rdev); unsigned int val, addr, mask; switch (id) { case LM3631_LDO_CONT: addr = LM3631_REG_ENTIME_VCONT; mask = LM3631_ENTIME_CONT_MASK; break; case LM3631_LDO_OREF: addr = LM3631_REG_ENTIME_VOREF; mask = LM3631_ENTIME_MASK; break; case LM3631_LDO_POS: addr = LM3631_REG_ENTIME_VPOS; mask = LM3631_ENTIME_MASK; break; case LM3631_LDO_NEG: addr = LM3631_REG_ENTIME_VNEG; mask = LM3631_ENTIME_MASK; break; default: return 0; } if (regmap_read(rdev->regmap, addr, &val)) return -EINVAL; val = (val & mask) >> LM3631_ENTIME_SHIFT; if (id == LM3631_LDO_CONT) return ldo_cont_enable_time[val]; else return ENABLE_TIME_USEC * val; } static const struct regulator_ops lm363x_boost_voltage_table_ops = { .list_voltage = regulator_list_voltage_linear, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, }; static const struct regulator_ops lm363x_regulator_voltage_table_ops = { .list_voltage = regulator_list_voltage_linear, .set_voltage_sel = regulator_set_voltage_sel_regmap, .get_voltage_sel = regulator_get_voltage_sel_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .enable_time = lm363x_regulator_enable_time, }; static const struct regulator_desc lm363x_regulator_desc[] = { /* LM3631 */ { .name = "vboost", .of_match = "vboost", .id = LM3631_BOOST, .ops = &lm363x_boost_voltage_table_ops, .n_voltages = LM3631_BOOST_VSEL_MAX + 1, .min_uV = LM3631_VBOOST_MIN, .uV_step = LM363X_STEP_50mV, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .vsel_reg = LM3631_REG_VOUT_BOOST, .vsel_mask = LM3631_VOUT_MASK, }, { .name = "ldo_cont", .of_match = "vcont", .id = LM3631_LDO_CONT, .ops = &lm363x_regulator_voltage_table_ops, .n_voltages = LM3631_CONT_VSEL_MAX + 1, .min_uV = LM3631_VCONT_MIN, .uV_step = LM363X_STEP_500mV, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .vsel_reg = LM3631_REG_VOUT_CONT, .vsel_mask = LM3631_VOUT_CONT_MASK, .enable_reg = LM3631_REG_LDO_CTRL2, .enable_mask = LM3631_EN_CONT_MASK, }, { .name = "ldo_oref", .of_match = "voref", .id = LM3631_LDO_OREF, .ops = &lm363x_regulator_voltage_table_ops, .n_voltages = LM3631_LDO_VSEL_MAX + 1, .min_uV = LM3631_VLDO_MIN, .uV_step = LM363X_STEP_50mV, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .vsel_reg = LM3631_REG_VOUT_OREF, .vsel_mask = LM3631_VOUT_MASK, .enable_reg = LM3631_REG_LDO_CTRL1, .enable_mask = LM3631_EN_OREF_MASK, }, { .name = "ldo_vpos", .of_match = "vpos", .id = LM3631_LDO_POS, .ops = &lm363x_regulator_voltage_table_ops, .n_voltages = LM3631_LDO_VSEL_MAX + 1, .min_uV = LM3631_VLDO_MIN, .uV_step = LM363X_STEP_50mV, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .vsel_reg = LM3631_REG_VOUT_POS, .vsel_mask = LM3631_VOUT_MASK, .enable_reg = LM3631_REG_LDO_CTRL1, .enable_mask = LM3631_EN_VPOS_MASK, }, { .name = "ldo_vneg", .of_match = "vneg", .id = LM3631_LDO_NEG, .ops = &lm363x_regulator_voltage_table_ops, .n_voltages = LM3631_LDO_VSEL_MAX + 1, .min_uV = LM3631_VLDO_MIN, .uV_step = LM363X_STEP_50mV, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .vsel_reg = LM3631_REG_VOUT_NEG, .vsel_mask = LM3631_VOUT_MASK, .enable_reg = LM3631_REG_LDO_CTRL1, .enable_mask = LM3631_EN_VNEG_MASK, }, /* LM3632 */ { .name = "vboost", .of_match = "vboost", .id = LM3632_BOOST, .ops = &lm363x_boost_voltage_table_ops, .n_voltages = LM3632_BOOST_VSEL_MAX + 1, .min_uV = LM3632_VBOOST_MIN, .uV_step = LM363X_STEP_50mV, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .vsel_reg = LM3632_REG_VOUT_BOOST, .vsel_mask = LM3632_VOUT_MASK, }, { .name = "ldo_vpos", .of_match = "vpos", .id = LM3632_LDO_POS, .ops = &lm363x_regulator_voltage_table_ops, .n_voltages = LM3632_LDO_VSEL_MAX + 1, .min_uV = LM3632_VLDO_MIN, .uV_step = LM363X_STEP_50mV, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .vsel_reg = LM3632_REG_VOUT_POS, .vsel_mask = LM3632_VOUT_MASK, .enable_reg = LM3632_REG_BIAS_CONFIG, .enable_mask = LM3632_EN_VPOS_MASK, }, { .name = "ldo_vneg", .of_match = "vneg", .id = LM3632_LDO_NEG, .ops = &lm363x_regulator_voltage_table_ops, .n_voltages = LM3632_LDO_VSEL_MAX + 1, .min_uV = LM3632_VLDO_MIN, .uV_step = LM363X_STEP_50mV, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .vsel_reg = LM3632_REG_VOUT_NEG, .vsel_mask = LM3632_VOUT_MASK, .enable_reg = LM3632_REG_BIAS_CONFIG, .enable_mask = LM3632_EN_VNEG_MASK, }, /* LM36274 */ { .name = "vboost", .of_match = "vboost", .id = LM36274_BOOST, .ops = &lm363x_boost_voltage_table_ops, .n_voltages = LM36274_BOOST_VSEL_MAX + 1, .min_uV = LM36274_VOLTAGE_MIN, .uV_step = LM363X_STEP_50mV, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .vsel_reg = LM36274_REG_VOUT_BOOST, .vsel_mask = LM36274_VOUT_MASK, }, { .name = "ldo_vpos", .of_match = "vpos", .id = LM36274_LDO_POS, .ops = &lm363x_regulator_voltage_table_ops, .n_voltages = LM36274_LDO_VSEL_MAX + 1, .min_uV = LM36274_VOLTAGE_MIN, .uV_step = LM363X_STEP_50mV, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .vsel_reg = LM36274_REG_VOUT_POS, .vsel_mask = LM36274_VOUT_MASK, .enable_reg = LM36274_REG_BIAS_CONFIG_1, .enable_mask = LM36274_EN_VPOS_MASK, }, { .name = "ldo_vneg", .of_match = "vneg", .id = LM36274_LDO_NEG, .ops = &lm363x_regulator_voltage_table_ops, .n_voltages = LM36274_LDO_VSEL_MAX + 1, .min_uV = LM36274_VOLTAGE_MIN, .uV_step = LM363X_STEP_50mV, .type = REGULATOR_VOLTAGE, .owner = THIS_MODULE, .vsel_reg = LM36274_REG_VOUT_NEG, .vsel_mask = LM36274_VOUT_MASK, .enable_reg = LM36274_REG_BIAS_CONFIG_1, .enable_mask = LM36274_EN_VNEG_MASK, }, }; static struct gpio_desc *lm363x_regulator_of_get_enable_gpio(struct device *dev, int id) { /* * Check LCM_EN1/2_GPIO is configured. * Those pins are used for enabling VPOS/VNEG LDOs. * Do not use devm* here: the regulator core takes over the * lifecycle management of the GPIO descriptor. */ switch (id) { case LM3632_LDO_POS: case LM36274_LDO_POS: return gpiod_get_index_optional(dev, "enable", 0, GPIOD_OUT_LOW | GPIOD_FLAGS_BIT_NONEXCLUSIVE); case LM3632_LDO_NEG: case LM36274_LDO_NEG: return gpiod_get_index_optional(dev, "enable", 1, GPIOD_OUT_LOW | GPIOD_FLAGS_BIT_NONEXCLUSIVE); default: return NULL; } } static int lm363x_regulator_set_ext_en(struct regmap *regmap, int id) { int ext_en_mask = 0; switch (id) { case LM3632_LDO_POS: case LM3632_LDO_NEG: ext_en_mask = LM3632_EXT_EN_MASK; break; case LM36274_LDO_POS: case LM36274_LDO_NEG: ext_en_mask = LM36274_EXT_EN_MASK; break; default: return -ENODEV; } return regmap_update_bits(regmap, lm363x_regulator_desc[id].enable_reg, ext_en_mask, ext_en_mask); } static int lm363x_regulator_probe(struct platform_device *pdev) { struct ti_lmu *lmu = dev_get_drvdata(pdev->dev.parent); struct regmap *regmap = lmu->regmap; struct regulator_config cfg = { }; struct regulator_dev *rdev; struct device *dev = &pdev->dev; int id = pdev->id; struct gpio_desc *gpiod; int ret; cfg.dev = dev; cfg.regmap = regmap; /* * LM3632 LDOs can be controlled by external pin. * Register update is required if the pin is used. */ gpiod = lm363x_regulator_of_get_enable_gpio(dev, id); if (IS_ERR(gpiod)) return PTR_ERR(gpiod); if (gpiod) { cfg.ena_gpiod = gpiod; ret = lm363x_regulator_set_ext_en(regmap, id); if (ret) { gpiod_put(gpiod); dev_err(dev, "External pin err: %d\n", ret); return ret; } } rdev = devm_regulator_register(dev, &lm363x_regulator_desc[id], &cfg); if (IS_ERR(rdev)) { ret = PTR_ERR(rdev); dev_err(dev, "[%d] regulator register err: %d\n", id, ret); return ret; } return 0; } static struct platform_driver lm363x_regulator_driver = { .probe = lm363x_regulator_probe, .driver = { .name = "lm363x-regulator", }, }; module_platform_driver(lm363x_regulator_driver); MODULE_DESCRIPTION("TI LM363X Regulator Driver"); MODULE_AUTHOR("Milo Kim"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:lm363x-regulator");
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